oaded ore car has a mass of 1200 kg and rolls on rails with negligible friction. It starts with an initial speed of 1.0 m/s and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 20.0° above the horizontal. The car accelerates uniformly to a speed of 3.50 m/s in 10.0 s and then continues at a constant speed. (a) What power must the winch motor provide when the car is moving at constant speed? (b) What maximum power must the motor provide? (c) What total energy transfers out of the motor by work by the time the car moves off the end of the track, which is of length 1300 m?
oaded ore car has a mass of 1200 kg and rolls on rails with negligible friction. It starts with an initial speed of 1.0 m/s and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 20.0° above the horizontal. The car accelerates uniformly to a speed of 3.50 m/s in 10.0 s and then continues at a constant speed. (a) What power must the winch motor provide when the car is moving at constant speed? (b) What maximum power must the motor provide? (c) What total energy transfers out of the motor by work by the time the car moves off the end of the track, which is of length 1300 m?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 41P: A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from...
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loaded ore car has a mass of 1200 kg and rolls on rails with negligible friction. It starts with an initial speed of 1.0 m/s and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 20.0° above the horizontal. The car accelerates uniformly to a speed of 3.50 m/s in 10.0 s and then continues at a constant speed. (a) What power must the winch motor provide when the car is moving at constant speed? (b) What maximum power must the motor provide? (c) What total energy transfers out of the motor by work by the time the car moves off the end of the track, which is of length 1300 m?
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